Filter.



F. SELLENSGHEIDT.

FILTER.

APPLICATION FILED SEPT. 2a, 1908.

Patented July 13, 1909.

n res ours FREDERICSELLENSGHEIDT, OF MILWAUKEE, WISCONSIN.

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Specification of Letters Patent.

Patented July 13, 1909.

application filed September 28, 1908. Serial No. 456,157.

To all whom ii may concern:

Be it known that l, Fnnnnnic SELLEN- scnnm'r, a citizen of the United States, residing at Milwaukee, in the countv of Milwaukee and State of Wisconsin. have invented a new anduseful Filter, Of WlllCh llie following is a specification.

My invention relates to improvements in fillers, with especial reference to that class of filters employed for beer, wine and other liquors.

The object of my invention is to means for varying the filter-age by varying the density of the liliering maleriul in accordance with the requiremenls of the liquid during filiraiion.

further object of my invention is to provide improved structural features in a filter of the described class.

in the following description, reference is bad to the accompanying drawings, in which Figure l is n verlical sectional view of a filler embodying my invention. Fig. 2 isa similar view showing a more complex struclure.

Like parts are identified by the same reference characters throughout boili views.

An'imperforaie casing A, (Fig. l) is mounted upon a base B, and a screen C, preferably cylindrical in form and having an open lower end, is suspended from the upper end of the casing A, to which it is connected by the coupling members D and the member ll being rigidly secured to provide upper end of the screen C to form a bead or end piece, which is provided with a tubulnr screw threaded central portion 1 ere lending through the end wall of 'ihe outer casing. The member E couslitutes an exlerior cap nut, screwed to the projecting end of the portion F, with a base flange G engaging the end wall of casing A between it and a portion of the bead D. A perforate tube H is connected with she tubular porbion F andsuspended iberefrom within the screen C. I

A tubular standard I extends tlu ougli the base B, with aclzing at J to prevent the escape of liquid from within casing A. The standard If is vertically adjustable and is adjusted by means of a nut K operating between the frame members L, as shown. The upper end of the standard I, is provided with a disk M which supports a tube N, continuous with the tul ular tandard, and a l member L and screen which telescopes upon the screen C, these screens being preferably cylindrical and arranged to fit with substantial exact ness, one within the other. The tube N similarly fits the tube H. These tubes H, N, and screens 0, are preferably formed of sheet metal provided with perforations l, whereby the liquid from the outer portions of casing A is permitted to pass through to the tube N and downwardly through the standard l and through a valved passage Q lo a delivery pipe ll.

The space between The screens C, O, and tubes ll, N, is filled with filtering material S, preferably with material which can be easily compressed, and which will expand when the compression is relieved, wood fiber or pulp being suitable for the purpose.

In operation, the liquid to be filtered, is delivered under pressure to the casing A through a pipe T, and this liquid passes through the screens C and U, the filtering material and the perforated tubes H and N to the interior of the tube N, and then downwardly through the standard I as above explained. By raising the standard, the filtering material is compressed and the filtering operation retarded. The standard may be raised or lowered by means of the nut K which has threaded engagement with the standard and when turned, bears on a frame act'ua'tes the srandard to raise or lower the screens N and (l and lbus lengthen and shorten the space occupied by the filtering material. By lowering the standard, the filtering material is permit-ted to expand and the operation accelerated. The tube l-l being stationary, and the op posing screen 6 being movable with the standard, it is obvious that when the standard is lowered, the relative movemeni:- of these two walls will facilitate the expansion of the material S.

The cap nut E is provided with a valve V to permit the escape of air when the liquid is first admitted ,to casing A.

Referring" to Fig. 2, the same reference characters are employed except that small letters are used instead of'caprtals, to identify the corresponding parts. This filter is, however, of larger diameter and is provided with additional walls a, o, and c 0", arranged respectively to telescope upon each other, with a space u between these telescopin sets of Walls, which serves as an intermediate reservoir, the liquid being subjected to a, double filtering operation. It will therefore be understood that-the number of walls and columns of filteringfmaterial may, be increased or diminished to meet any requirements. It will be observed that the perforations in the respective walls are staggered, so that the ca acity of the openlngs will not be material y varied when the. ad ustment of the standard is changed.

The filtering material Sis preferably inserted in the space between the perforate tube H and the screen G to loosely fill such space, and another body of like filtering material is inserted'in the space between the perforate tube N and the cylindrical screen 0, preparatory to assembling the parts, so that when assembled the telescoping movement of the tubes and screens, will compress the respective bodies of filtering material S to the desired density.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent is,-

1. A filter, comprising an inclosing casing, provided with a set oi depending interior erforate walls, a tubular standard extendmg upwardly through the bottom wall of the'ca-sing and vertically adjustable therein,

a set-got perforate walls-connected with said standard and telesobnically arranged in relation to said depen "ng walls,and a body of filtering material between. the inner and outer telescopically over-lapping walls, said casing being provided with an inlet communicating with space between the casing and the outer perforated walls and said tu-, bular standard constituting an outlet.

2. A filter, comprisin an inclosing casing, provided with a set 0 depending interior )erforate walls, a tubular standard extending upwardly through the bottom wall of the casing, a set of perforate walls, connected with said standard and arranged to the casing lafp over said depending walls, and a body 0 filtering material between the over-lapping walls, said casing being provided with an inlet communicating with s ace between the casing and the outer per orated walls and saidtubular standard constituting an outlet.

3. A filter, comprisin an inclosing casing, provided with a set 0 depending interior perforate walls, a tubular standard extending upwardly through the bottom wall of a set or erforate walls, conbottom wall of the casing, a

the other, a body wanna ever said depending wads, and a body la ol' filtering material between the over-lapping walls, together with the density of the filtering material, sai casing being rovided with an inlet communicating with space and the outer perforated walls and said tubular standard constituting an outlet.

4:. A filter, comprising an inclosing casing, provided with a set oi perforate walls and a body rial located between said standard extending upwardly means for varying walls, a tubular through the set of perforate walls connected withsaid standard and arranged to lap over said depending walls, and a body of filtering material between the walls carried by said standard in compressing relation to the filtering material between said dependingwalls, said casing being provided with an inlet communicating with space between the easing and the outer perforated walls and said tubular standard constituting an outlet.

5. A filter comprising an inclosing casing provided with aset of interior longitudinally extending walls connected with the casin a set of longitudinally extending rnova le' walls telescopically arranged to lap over the walls of the first mentioned set, a body of filtering material located between the overlapping wal justing said movable walls to compress the filtering material or permit it to expand, said walls being provided with perforations and said casing being provided with an inlet leading to space exterior to the overlapping walls, and an outlet leadin from the central portion of the chamber inclosed by said casin between the casing depending interior of filtering matels and means for ad-.

ally arranged perforated walls, means for of said walls relatively to of filteri material loadjusting one set cated between the walls,

an a casing in.

closing said walls and provided with an inlet passage leading to space exterior to said walls, and an outlet passage leading Tom thecentral space within said walls;

In testimony whereof I afiix my signaturein the presence of two witnesses.

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